AU587045B2 - Rapid carburizing process in a continuous furnace - Google Patents
Rapid carburizing process in a continuous furnaceInfo
- Publication number
- AU587045B2 AU587045B2 AU60225/86A AU6022586A AU587045B2 AU 587045 B2 AU587045 B2 AU 587045B2 AU 60225/86 A AU60225/86 A AU 60225/86A AU 6022586 A AU6022586 A AU 6022586A AU 587045 B2 AU587045 B2 AU 587045B2
- Authority
- AU
- Australia
- Prior art keywords
- furnace
- atmosphere
- concentration
- charge
- injected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 238000005255 carburizing Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 2
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000012159 carrier gas Substances 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
- C23C8/22—Carburising of ferrous surfaces
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Tunnel Furnaces (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Multiple-Way Valves (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Process in which there are injected a carrier gas and a hydrocarbon capable of producing, at conventional carburizing temperatures, an atmosphere of predetermined composition having a nominal concentration of carbon monoxide, a door of the furnace being opened with a given periodicity to permit the passage of a charge to be carburized, the opening of this door resulting in particular in an increase in the concentration of the oxidizing species in the atmosphere of the furnace. According to the invention, the concentration of carbon monoxide of the atmosphere injected into the furnace is increased with the same periodicity so as to compensate for the increase in the concentration of the oxidizing species of the furnace and thus maintain the carbon potential of the carburizing atmosphere of the furnace substantially constant throughout the duration of the carburization of the workpieces of the charge.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8512380A FR2586259B1 (en) | 1985-08-14 | 1985-08-14 | QUICK CEMENTATION PROCESS IN A CONTINUOUS OVEN |
| FR8512380 | 1985-08-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU6022586A AU6022586A (en) | 1987-02-19 |
| AU587045B2 true AU587045B2 (en) | 1989-08-03 |
Family
ID=9322228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU60225/86A Ceased AU587045B2 (en) | 1985-08-14 | 1986-07-16 | Rapid carburizing process in a continuous furnace |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4769090A (en) |
| EP (1) | EP0213991B1 (en) |
| JP (1) | JPS6240359A (en) |
| AT (1) | ATE40416T1 (en) |
| AU (1) | AU587045B2 (en) |
| BR (1) | BR8603865A (en) |
| CA (1) | CA1259550A (en) |
| DE (1) | DE3661943D1 (en) |
| ES (1) | ES8706850A1 (en) |
| FR (1) | FR2586259B1 (en) |
| ZA (1) | ZA865392B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2586258B1 (en) * | 1985-08-14 | 1987-10-30 | Air Liquide | PROCESS FOR THE QUICK AND HOMOGENEOUS CEMENTING OF A LOAD IN AN OVEN |
| FR2623209B1 (en) * | 1987-11-17 | 1993-09-03 | Air Liquide | PROCESS OF HEAT TREATMENT UNDER NITROGEN AND HYDROCARBON GAS ATMOSPHERE |
| FR2626292A1 (en) * | 1988-01-26 | 1989-07-28 | Paturle Aciers | Process for thermochemical surface treatment of steel strips and in particular of thin strips and plant for its use |
| IT1229078B (en) * | 1988-03-16 | 1991-07-18 | Air Liquide | METAL ARTICLES TREATMENT PROCESS AND DEVICE FOR TREATMENT. |
| FR2639250B1 (en) * | 1988-11-24 | 1990-12-28 | Air Liquide | |
| US5133813A (en) * | 1990-07-03 | 1992-07-28 | Tokyo Heat Treating Company Ltd. | Gas-carburizing process and apparatus |
| DE4400391A1 (en) * | 1994-01-08 | 1995-07-13 | Messer Griesheim Gmbh | Process to avoid edge oxidation when carburizing steels |
| US5934871A (en) * | 1997-07-24 | 1999-08-10 | Murphy; Donald G. | Method and apparatus for supplying a anti-oxidizing gas to and simultaneously cooling a shaft and a fan in a heat treatment chamber |
| CN102828143A (en) * | 2012-08-30 | 2012-12-19 | 天津创真金属科技有限公司 | High-temperature carburizing technology for workpiece |
| CN113215519B (en) * | 2021-04-19 | 2023-08-15 | 常州天山重工机械有限公司 | Carbon saturation control process of muffle-free tank |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU542462B2 (en) * | 1980-10-08 | 1985-02-21 | Linde Ag | A method for case hardening metallic workpieces |
| AU543040B2 (en) * | 1980-10-08 | 1985-03-28 | Linde Ag | Gas carburising |
| AU6045986A (en) * | 1985-08-14 | 1987-02-19 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process for a rapid and homogeneous carburization of a charge in a furnace |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US26935A (en) * | 1860-01-24 | Attaching bonnets to sails | ||
| FR439241A (en) * | 1911-01-25 | 1912-06-08 | Giovanni Romei | Improvements in wheels for tanks and other vehicles in general |
| US2955062A (en) * | 1952-02-27 | 1960-10-04 | Midland Ross Corp | Method for carburizing in a continuous furnace |
| USRE26935E (en) | 1968-06-26 | 1970-08-18 | Carburizino method and apparatus | |
| US4049472A (en) * | 1975-12-22 | 1977-09-20 | Air Products And Chemicals, Inc. | Atmosphere compositions and methods of using same for surface treating ferrous metals |
| US4145232A (en) * | 1977-06-03 | 1979-03-20 | Union Carbide Corporation | Process for carburizing steel |
| CH632013A5 (en) * | 1977-09-22 | 1982-09-15 | Ipsen Ind Int Gmbh | METHOD FOR GAS CARBONING WORKPIECE FROM STEEL. |
| US4175986A (en) * | 1978-10-19 | 1979-11-27 | Trw Inc. | Inert carrier gas heat treating control process |
| US4306918A (en) * | 1980-04-22 | 1981-12-22 | Air Products And Chemicals, Inc. | Process for carburizing ferrous metals |
| DE3149212A1 (en) * | 1981-01-14 | 1982-08-05 | Holcroft & Co., Livonia, Mich. | METHOD FOR ADJUSTING OVEN ATMOSPHERES |
| FR2527641A1 (en) * | 1982-05-28 | 1983-12-02 | Air Liquide | PROCESS FOR THERMALLY TREATING METALLIC PARTS THROUGH CARBURATION |
| DE3310733C2 (en) * | 1983-03-24 | 1986-04-03 | Daimler-Benz Ag, 7000 Stuttgart | Process to reduce the consumption of protective gas as well as the edge oxidation of components to be treated in lock push-through systems with endogas as the combustible protective gas |
| JPS6130659A (en) * | 1984-07-20 | 1986-02-12 | Tokyo Netsu Shiyori Kogyo Kk | Gas carburizing method with nitrogen-base gas |
-
1985
- 1985-08-14 FR FR8512380A patent/FR2586259B1/en not_active Expired
-
1986
- 1986-06-19 ES ES556249A patent/ES8706850A1/en not_active Expired
- 1986-07-10 US US06/883,927 patent/US4769090A/en not_active Expired - Lifetime
- 1986-07-16 AU AU60225/86A patent/AU587045B2/en not_active Ceased
- 1986-07-16 AT AT86401584T patent/ATE40416T1/en not_active IP Right Cessation
- 1986-07-16 EP EP86401584A patent/EP0213991B1/en not_active Expired
- 1986-07-16 DE DE8686401584T patent/DE3661943D1/en not_active Expired
- 1986-07-18 ZA ZA865392A patent/ZA865392B/en unknown
- 1986-08-13 BR BR8603865A patent/BR8603865A/en not_active IP Right Cessation
- 1986-08-13 CA CA000515899A patent/CA1259550A/en not_active Expired
- 1986-08-14 JP JP61189733A patent/JPS6240359A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU542462B2 (en) * | 1980-10-08 | 1985-02-21 | Linde Ag | A method for case hardening metallic workpieces |
| AU543040B2 (en) * | 1980-10-08 | 1985-03-28 | Linde Ag | Gas carburising |
| AU6045986A (en) * | 1985-08-14 | 1987-02-19 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process for a rapid and homogeneous carburization of a charge in a furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| AU6022586A (en) | 1987-02-19 |
| JPS6240359A (en) | 1987-02-21 |
| DE3661943D1 (en) | 1989-03-02 |
| BR8603865A (en) | 1987-03-24 |
| JPS6356304B2 (en) | 1988-11-08 |
| US4769090A (en) | 1988-09-06 |
| ES8706850A1 (en) | 1987-07-01 |
| FR2586259A1 (en) | 1987-02-20 |
| EP0213991B1 (en) | 1989-01-25 |
| ZA865392B (en) | 1987-03-25 |
| ATE40416T1 (en) | 1989-02-15 |
| CA1259550A (en) | 1989-09-19 |
| FR2586259B1 (en) | 1987-10-30 |
| ES556249A0 (en) | 1987-07-01 |
| EP0213991A1 (en) | 1987-03-11 |
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